Hair drier



Feb. 19, 1952 Filed Oct. 11, 1948 E. HEDiN HAIR DRIER 6 Sheets-Sheet 1 diva/2%? Feb. 19, 1952 E. HEDIN 2,586,036

HAIR DRIER Filed Oct. 11, 1948 6 Sheets-Sheet 2 Feb. 19, 1952 E. HEDIN 2,586,036

HAIR DRIER Filed Oct. 11, 1948 6 Sheets-Sheet 3 E. HEDIN HAIR DRIER Feb. 19, 1952 6 Sheets-Sheet 4 Filed Oct. 11, 1948 E. HEDIN HAIR DRIER Feb. 19, 1952 s ShetsSheet 5 Filed Oct. 11, 1948 E. HEDIN HAIR DRIER Feb. 19, 1952 Filed Oct. 11, 1948 6 Sheets-Sheet 6 Patented Feb. 19, 1952 UNITED PATENT OFFICE DRIER "Einaifledin, Chicago. :AppIicationOctober 11., IQQSLSBi'iIlNl-fi 53,952

The invention relates to hair driersin-general, and particularly to hair driersof thevertical standard or floor type.

The primary object of the presentinventionis the provision of a novel hair drier embodying means for causing air to be drawn-upwardintoa drying hood, where the air is warmed, and'then ultimately discharging the airout of the-base portion of the drier.

Another object of the present invention-isthei provision of a hair drier embody-ing'improved thermostatically controlled means for permitting the temperature of heating elements within-the hood to be controlled withincertain .predetermined ranges.

A further object of the invention is-theprovision of a, hair drier embodying new and improved means for effecting adjustment of thehood portion thereof.

A still further object of the invention resides in the location and arrangement of the parts to permit the apparatus to-be assembled-easily y, andquickly, and permits parts to be removed and replaced so as tofacilitate repairs and replacement.

.Still another object is to provide a hair drier which has improved means for-heating acoil by forcing steam through a-predetermined'path to thehood ofthe machine and controlling the temperature thereof; which has novel means for: condensing the steam and returning the condensate to its original reservoir; which has simplified means for effecting-adjustment of the hood in various directions; which embodies-certain blower means for creating a suction system in the-hood; and which includes various new and novel arrangements in construction, operation and arrangement of parts. v

Numerous other objects and advantages will be apparent throughout the progress of the specification, which follow.

The accompanying drawings illustrate a selected embodiment of the present invention and the views therein are as follows:

Fig. 1 is a detail side elevational view of'the improved hair drier, certain parts being broken away'for the sake of clearness;

Fig. 2 is a rear elevational view;

Fig. 3 is a detail fragmentary 'sectionalview of the hair drier hood;

Fig. 4is a fragmentary view showingthe means for pivotally supporting the'hood;

Fig. 5 is a sectional view onlines '5"5 ofFigs. 1, 2 and 7;

Fig. '6 is a'sectional' view on lines*66 "of i Figs. 1, '2 and 7;

reduced. in diameter.

-frustro-conical depression 8.

fi isadetail vertical sectional-view of the base-portion'of the hair drier on -lines-1l of Figs. 5 and 6, certain parts being shown in elevation-and other'parts being omitted for the sake-of-clearness;

. 'figc-fi is a-sectional view on lines 8--8 of Figs. l, -.2 and '7, certain parts being omitted for the sake of clearness;

Fig. 9 is aplan section. on the lines 99 of Figai ands-2;

Fig. 10 is an enlarged fragmentary vertical section on line l0-I 0 of Fig. 9;

llis anelevational viewof the liquid circulating pump, certain parts being broken away for the sake of clearness;

Fig; 12 is a-detail perspectiveview of the fluid circulating-system; and

Fig. 13 -is=-a schematic wiring diagram showing the manner in which various components of the present invention are electrically connected.

The particular embodiment of the invention herein disclosed-for thepurpose of illustrating the invention comprises an annular base I which hasspreferably a-plurality of integral lugs or supports 2. The lugs or supports 2 project radially inward a-short-distance from the inner edgeof thebase, Figs. 1 and 7, and these lugs'2 are adapted to'support the lower ends of vertical rods 3. Each rod 3 is preferably hexagonalin cross section and has opposite ends which are The lower reduced end of eachrod3 is adapted to pass through a bore 4 in-its corresponding lug 2 and may be secured to the lug by'any suitable means, such as by a nut 5. The upper reduced end of each rod 3 is .adaptedtopass through a corresponding alined bore 6 in a spaced upper plate-1.

The upper plate 1 serves as a secondary support for zit-plurality of parts which are included in the present invention. -The plate I prefer-ably hasa frustro-conical depression 8, Figs. 5 and 7, at its center. the depression being-open at its lower end, as indicated at 9. 'An upwardly projecting cylindrical member or tube ID, has an integral outer annular lower flange II which rests onthe uppersurface of the plate]. The inner diameter of the cylindrical member or tube I0 preferably is equal to'the greater or upper diameter of the The cylinder or tube] 0 is mounted on the plate I so that its lower end registers fully with the upper end of the de- A member |3 which may be in the general shape of an inverted funnel is mounted on the plate 1, and this member |3 which may be a downwardly from the point of junction of the' neck IS with the tapered wall IS. The neckextension l6 may have an inner annular groove |.9.

at its lower end, which is adapted to engage properly the upper end of the cylinder [0. 'A packing washer 26, which may be made of any suitable,

but preferably resilient, material, may be pro-- vided between the upper end of the cylinder IO and the groove IS on the neck extension I'B, so as to provide a leak-proof, hermetically sealed joint.

The neck l6, Figs. 1 and2, preferably has-an elongated vertically disposed housing 2| which is secured exteriorly of the'neck by any suitable means, such as by machine screws 22. The housing 2| is preferably provided with a centrally disposed enlarged portion 24 in which a horizontal shaft 25 is journalled. The shaft 25 has apinion or spur gear 26 secured thereto, and a collar 21 (Fig. 9) is pinned to the shaft 25 so as to prevent the shaft 25 from moving longitudinally.

The pinion 26, Figs. 1, 9 and 10,- is adapted to mesh with a vertically disposed rack 28 which is fixedly secured to a hollow cylindrical'tube 29. The rack 28 is capable of longitudinal movement in the slot 23 so that the tube 29 may move telescopically within the neck l6 to raise and lower the tube 29. The tube 29 may be raisedor lowered to any predetermined position by rotating a hand wheel 30 which is secured to one end of the shaft 25. Rotation of the hand wheel 30 thereupon causes the pinion 26 to rotate and move the rack 28 to cause the tube 29 who raised or lowered. The tube 29 may be main tained in any predetermined raised or lowered position by tightening a locking screw 3|, Fig. 9, against the shaft 25, the locking screw 3| being threaded in a bore 32 of the enlarged housing portion 24. The locking screw 3| may be ad-i justed to locking position, or may be released from looking position, by manually turning a handwheel 33 at the outer end of this screw.

" The upper end of the cylindrical tube 29, Fig.- 1, may be secured by any suitable means to oneend of a rightangled tubular elbow member 34 The other end of the elbow 34 may be fastened by any desired means to one end of a straight cylindrical tube 35, Fig. 3, whereby the tube 35 is heldin an outwardly extending horizontal position, Figs. 1 and-3. The outer end of the tub e 35 is: secured to the inner end offa right angled tubular elbow 36, the inner endof the elbow 36 being secured to the tube 35 in such a'manner. that the elbow is directed downwardly, as clearlyshown'; inFigs. 1 and 3. a v

The outer downturned end of the elbow 36) has a yoke member 31 secured thereto, Figs.. 1,; 2 and 4. This yoke member 31 comprises a 0011a; 38 to which a pair of integral arms 39- and 49" extend downwardly. A ring-shaped member .41 may be positioned between the lower-ends of the. arms 39 and 40, andthis ring-shaped member 4| is pivotally journaled in a pair of trunnions 42 and 43. The trunnion 42 is supported at its outer end in the lower end of the arm 39, and the trunnion 43 is threaded intermediate its ends in the lower end of the arm 40, as indicated at 44.

The lower end of the elbow 36 is adapted to have a flexible bellows 45 connected thereto. The bellows 45 extends downwardly between the arms 39 and 46 and may have its lower fold carried by theu'pper surface of the ring-shaped member 39, as at 46, Fig. 3. The bellows 45 has an integral cylindrical extension 41, which projects downwardly through the ring-shaped member 4|. This extension 41 may be fitted within and is $6- cured by, any suitable means to a neck 48 which "extends upwardly from the top of a hood member 49 which is preferably dome-shaped, being open at its lower end, as at 50, Fig. 3. The lower edge of the hood member 49 may be strengthened or reinforced by a ring 5|, having an outer upwardly extending annular flange 52 which may be secured to the outer surface of the hood 49,

the ring having an inner, upwardly extending annular flange 53. The hood 49 may be adjusted in a vertical are by arranging it about the trunnions 42 and 43. Any desired angular position of the hood 49 may be maintained by manually rotating a hand wheel 54 at the outer end of the trunnion 43 so as to cause a tight frictional fit between the end of the trunnion 43. A washer 55 may be mounted in an annular groove 56 on the trunnion 43 within the ring-shaped member 4 I The present invention provides means for causing air to be drawn upwardly through the hood 49. The means for causing the air to be drawn to the desired location comprises a fan housing 51 which is suspended from the lower surface of the plate 1, Figs. 1, 5, 6 and 7. The fan housing 51 may be secured to the plate 1 by means of fasteners 58 which pass through corresponding lugs 59 at the upper end of the fan housing and thread into the plate 1, Fig. 7. The fan housing 51 comprises a curved vertical wall 6|] which is in- The fan housing 51 is preferably mounted eccentrically with respect to the frustro-conical depression 8 in the plate 1, as shown in Fig. 6. The fan housing 51 has communication with, and is joinedintegrally to an outwardly projecting tubular extension 62. The outer end of the extension 62 may be tightly fitted within one end of a tube or duct 63, the other end of the duct 63 passing through a suitably shaped exhaust 1 opening 64in a cylindrical plate 65, which completely encircles the base portion of the hair drier and serves as a housing for the base of the drier. The outer end of the duct 63 may be provided with an integral flange 66 which may be secured. to the plate by any suitable means, such as by.

screws 61.

,A motor support bracket member 68, Figs. 1 and 7, may be suspendedfrom the bottom wall 6| of the fan housing 51. This bracket 68 embodies an upper C-shaped plate 69, which is integrally connected to a downwardly projecting arm 10. A pair of integral longitudinal flanges 1| project outwardly from the opposite sides of the arm 16, and an' electric motor 12 for a fan is preferably mounted in a vertical position on the flanges 1| by means of bolts 13. A hub 14 at the upper end of the electric motor 12 projects upwardly through a circular opening 15 which is formed in the bottom wall 6| of the housing 51 for a fan 16.

The fan 16, which is in the form of a squirrel cage, is bolted to the upper-end of the shaft fl of the motor 12. The fan 16, Figs. 6--.and 7, comprise a circular bottom plate 18 to which a: plurality of vertically disposed blades '19. are fastened at-their lower ends, the upper ends of the blades 19 being secured to the lower. surface of an annular shaped plate 80. The. motor12is mounted on the bracket 68 so that'its shaft I1 and the fan 15 are in axial alignmentwiththe opening 9 in the frustro-conical depression 80f the plate I. An outer annular groove 8| may be provided at the lower end ofthe frustro-conical depression 8 so that the upper annular plate 80 on the fan member 16 will properly: encircle the lower end of the depression 8. A resilient member 82 may be inserted between the motor hub l4 and the bottom plate Bl of the fan housing 51 so as to provide a leak-proof, hermetically-sealed joint. A grille or louver plate 83 may be positioned over the air exhaust opening 84 at the end of the duct t3 so that a child or other person may not force his arm through the duct 63 and have his hand or arm caught by the revolving fan 16.

The operation of the air suction system is such that when the motor 12 is operated, the fan 76 will revolve at a high rate of speed and draw air upwardly into the hood 49. The air passing upwardly through the hood 49 travels through the bellows 46, the elbow 39, the tube 35, the elbow 34, the neck I8, the cylinder I9 and thence downwardly through the opening 9 in the depression 8, and then into the fan housing where it is finally discharged outwardly through the duct 83.

It is highly desirable that heat be employed in .drying hair; therefore, means are provided to create heat at the proper temperature. Heat .is generated by a fluid circulating system which is disclosed principally in Figs. 1 and 12. This fluid system embodies a tank 84 which is C-s'haped in cross section, the tank being secured at its top, by any suitable means, to the lower surface of theplate I, and having a conventional pump 85 (Fig. 11) mounted therein. The pumpmay be suspended from the top wall of the tank 84 by means of a bracket 86, which may be secured thereto by means of machine screws 81. An inlet port 88 and a discharge outlet 89 are provided for the pump. The discharge outlet 89 is connected to, and communicates with, the lower end of a hollow tube 9|] which extends upwardly therefrom, the upper end of the tube 90 being connected to, and having communication with, one side of a check valve 9|. The other side of the check valve 9| is connected to, and has communication with, the inlet end of a length of tubing 92 which is formed into a coil 93. The coil 93 surrounds or jackets an electrically operated resistance heating element 94 which extends throughout the entire length of the coil. The other end of the tubing 92 has communication with a suitable coupling member 95. The coupling member 95, is joined to one end of an extended length of tubing 95 which spirals upwardly through the neck I76, and then passes through the tube 29, around the the hood 1 to: a point adj acenti the reinforcing rin 5|. The tubing 98 is then formed intoa tight closed coil 99. which progresses upwardly against the inner surface of a heat insulatingrmember 198 secured by anysuitable means tothe inner surface of the hoodmember'49. .The tubing. 98 then-returns bypassing through thebellows 45, the elbow 38, and intothe tube. 35 where "itmay be connected with one side of a coupling member NH. The other side of the coupling member H'H may be connected. to an extended length of tubing I82. The tubing .102 passesv through .the remainder of the tube 35, through the elbow, and then spirals downwardly, as at l.03,through the tube 29, whereupon it passes through the neck It and the tube 10 where it finally'joins at its other. end witha coupling member 184, which passes through the wall of the latter tube. This coupling member I04 has communication with a tube I85 which extends'downwardly intothe tank 84.

The tank 84 may be filled with any suitable liquid, preferably water, by pouring the liquid into a funnel I06, which is joined at its lower end to one side of a -manually operated valve I01.

The other side of the valve [01 is connected to the tube 90, which extends upwardly from the discharge outlet of thepump 85. The valve I01 is normally closed during operation of the driei and is opened only when it is necessary to pom liquid into the tank 84' by way of the funnel I06.

The pump 85, Fig. 11, may be operated-by means of an electric motor I08,--which is coupled to an impeller I09. The-motor I98,-whenoperated by means of an electric control circuit hereinafter described, causes the impeller I09 torotate, whereby liquid is drawn in through the inlet port 88 from the tank 84 and is discharged outwardly from the discharge outlet 89. Asthe liquid arriving from the discharge outlet 89 progresses through the coil 93, it is heated by means of the electric heating element 94. The heating element 94 produces suflicient heat to cause the liquid passing through the coil 93 to change into the vapor phase before it leaves this coil. The resulting vapor, after leaving the coil 93, passes upwardly through the tubing 96 and ultimately downwardly into the coil portion 99 in the'hood 49, where it is gradually and progressively cooled by air which has been drawn over the coils by the suction system described heretofore. As the vapor in the coil 99'iscooled, it is condensed and changes back into the liquid-phase. During the condensation process, the liquid gives ofi a latent heat of condensation, thereby causing the interior of the hood 49 to be-warmed to a proper degree. After the condensed liquid passes through the coil 99, it returns through the tubings 98 and 98 by the path heretofore described. The check valve 9| prevents the vapor, which might be at considerable pressure, from forcing the liquid elbow 34, and half way through the tube 35, where it may connect to and communicate with one side of a coupling member 91.

The other side of the coupling member. 91 connects to and communicates with a length of tub-,

through the pump in a reverse direction.

The pump 85 is preferably-hermetically sealed within the tank'84 so that the'pumpeffectively operates in a closed pressure system. The work done by the pump is'mainly. therefore, inpumping the liquid upwards against a gravityhead. Furthermore, since the liquid is circulating through a closed system, the same liquid may be used continuously over a long period of time without the necessity of replacement.

The present hair drier. embodies novel means for. controlling, the: upper and lower temperature limits of the liquid-and vapor in thefluid circu-' lating system. ."lhisptemperature control means 7 V embodies a bimetallic strip Iltl, which may be fastened at one end to a lug III, this lug being secured to the inner surface of the lower wall I4 of the casting I3. The strip H is preferably positioned so that it is normally against the bottom of the tubing coil 93.

An electric switch II2, which is provided to control the operation of the heating element 94 and the pump motor I08, is positioned below the strip III]. This switch H2 is preferably of the sensitive type, that is, its contacts maybe opened by the application. of a very small force. The switch II2 has a movable operating pin II3 which projects upwardly therefrom and is adapted to be operated by the strip I II] to operate the switch. The free .end of the strip I I9 is positioned directly above the switch operating pin II3 so that ,whenthe strip H0 is warmed by means of heat transferred from the tubing coil 93, the bimetallic strip III] bends downwardly as a cantilever, and, at a predetermined temperature, its free end engages the pin I I3 to open the contacts of the switch II 2.

The electrical operation of the present invention may be best understood by referring to Fig. 13, which shows the manner in which the various electrical parts of the invention are related. A pair of conductors H4 and H5 are each electrically connected at one end to a suitable source of electric power H6 (not shown schematically).

The conductor I I4 is electrically connected at its other end to one terminal of the fan motor I2, while the conductor I I5 is connected at its other end to one contact of a switch Ill. The other contact of the switch II! is electrically connected, by means of a suitable conductor II8,-to the other terminal of the fan motor 12.

The pump motor I08, Fig. 11, and the electric heating element 94, Fig. 7, are electrically'connected in parallel. One of the two common terminals is electrically connected to the conductor II4 by means of a sutiable conductor H9. The other of the two common terminals is electrically connected, by means of a suitable conductor I20, to one contact of-the switch II2, the other contact of the switch II2 being electrically connected, by means of a suitable conductor I2I, to the conductor H8. The contacts of the switch II 2 are opened and closed by movement of the bimetallic strip IIU.

The hair drier may be used by first properly positioning the hood 48 about a persons head so that the head is positioned within the hood. The switch I", which may be mounted on the tapered wall I5 of the funnel-shaped casting l3 (Fig. 2), is then closed manually, thereby causing electric power to be applied to the fan motor 12, the pump motor I08, and the resistance heating element 94. The fan member 16 rotates to draw air upwardly into the hood 49 and around the persons head and over the hair. As air is drawn into the hood, it passes over the coil 99 and is heated, this heated air causing a pleasant drying action and is not excessive, as is usual with conventional hair driers. A preferred embodiment of the present invention has been designed so as to draw air into the hood 49 and across the coil 99 at a velocity which simulates air conditions which might be encountered on a pleasant summer day. The hair drier operates at a proper predetermined temperature within close temperature ranges. Should the liquid and vapor being forced throughthe fluid circulating system reach a predetermined high temperaturerange, the bimetallic strip II 0 will bend ill "downward a suflicient distance to open the contacts of the switch I I2, thereby causing the pump motor to stop and permit the electric heating element to cool. The bimetallic strip III] will bend upwardly as the liquid and vapor cool, and when a predetermined low temperature is reached, the switch I I2 will close to apply electric power again to the pump motor I08 and to the heating element 94. The temperature range is such that the maximum temperature reached will not be excessive but will be pleasant and comfortable to the person. Also, the minimum temperature is such that it will always maintain the proper drying characteristics.

The invention provides a hair drier which is thermostatically controlled and employs an electrical system which permits the drying temperatureto be maintained at an even temperature within a narrow range. The device provides an eflicient air suction system for drawing air upwardly into the hood and about a persons head so that the person may experience pleasant, comfortable hair drying action. Adjusting apparatus which may be operated easily is provided so as to position the hood properly about a person's head. The drier may be assembled and dismantled easily and rapidly and is strong and durable in construction. The device is extremely eflicient in operation, may be operated inexpensively, and its parts will not get out of order easily.

Changes may be made in the form, construction and arrangement of the parts without departing from the spirit of the invention or sacrificing any of its advantages, and the right is hereby reserved to make all such changes as fall fairly within the scope of the following claims.

The invention is hereby claimed as follows:

1. A hair drier comprising a hood adapted to be applied over the head of a person, said hood being of a size larger than a persons head so as to provide a space about the head interiorly of the hood, a suction pipe line communicating with the interior of the hood, suction means for creating a suction in said hood to draw air into the hood through the said space, an expansible bellows-like member interposed between the hood and the pipe line to permit vertical adjustment of said hood, a fluid circulating coil in said hood, and means extending in said suction pipe line for circulating a fluid in said coil, including a fluid pipe connected with said coil, said pipe extending in said suction pipe line and having a helical coil to accommodate movement of said hood with respect to said suction pipe line.

2. A hair drier comprising a hood adapted to be applied over the head of a person, said hood being of a size larger than a persons head so as to provide a space about the head interiorly of the hood, a suction pipe line communicating with the interior of the hood, suction means for creating a suction in said hood to draw air into the hood through the said space, a heating coil disposed inte'riorly of said hood, means to circulate a heating fluid through said coil, and thermostatically controlled means to control the operation of said last named means.

3. A hair drier comprising a hood adapted to be placed about the head of a person, means for circulating air through the hood, a coil interiorly of said hood, a liquid supply tank to which said coil is connected, heating means to heat liquid in said tank to convert the liquid into steam, means to force the steam so converted into said culating air through the hood, a-coil interiorly :ofsaid' hood, aliquid supply :tank to-which, said coil is connected, heating means to heat liquid in said tank to convert the liquid into steam, circulating means to vforce the steam'so converted through said coil, to heat the same, and ,thermostatic means for controlling the operation of said heating and circulating means.

5. A hair drier comprisinga hood adapted-to be placed about the'head of a personQa coil interior-1y of said hood, a liquid supply tank to which said coil is connected, heating means. to heat liquid in said tank to convert theliquid into steam, means to force the steam so converted through said coil, to heat the same, means to prevent operation of the heating means when the temperature in the coil reaches a predetermined value, and means operable to circulate air in said hood.

6. A hair drier comprising a hood adapted to be placed about the head of a person, a coil interiorly of said hood, a liquid supply tank to which said coil is connected, heating means to heat liquid in said tank to convert the liquid into steam, means to force the steam so converted through said coil, to heat the same, means to prevent operation of the forcing means when the temperature reaches a predetermined value, and means operable to circulate air in said hood.

7. A hair drier comprising a hood adapted to be placed about the head of a person, a coil interiorly of said hood, a liquid supply tank to which said coil is connected, heating means to heat liquid in said tank to convert the liquid into steam, means to force the steam so converted through said coil, to heat the same, means to prevent operation of the heating means when the temperature in the coil reaches a predetermined value, and to prevent operation of the forcing means when the temperature reaches a predetermined value, and means for creating a suction in said hood.

8. A hair drier comprising a hood adapted to surround the head of a person, a pipe line leading to said hood, a flexible element interposed between said hood and said pipe line, a coil in said hood, a supporting stand for said pipe line, means to adjust said pipe line vertically, a tank containing liquid in said stand, heating means to heat the liquid to produce steam, a hollow feed tube in said pipe line leading from the tank to the coil whereby the coil will be heated by the steam produced, a pump in said stand to force steam through said tube, and a return tube connected to the coil and leading to said tank.

9. A hair drier comprising a hood adapted to surround the head of a person, a pipe line leading to said hood, a flexible element interposed between said hood and said pipe line, a coil in said hood, a supporting stand for said pipe line, means to adjust said pipe line vertically, a tank containing liquid in said stand, heating means to heat the liquid to produce steam, a hollow feed tube in said pipe line leading from the tank to the coil whereby the coil will be heated by the steam produced, a pump in said stand to force steam through said tube, a return tube connected to the coil and leading to said tank, and thermostatic control means to cause the heating means and the pump to become inactive when the coil reaches a predetermined maximum temperature.

10. A hair drier comprising a hood adapted to su'rrduhd the head of a personj'a pipe line leading to said hood, a flexible element interposed between-said hood and said pipe line, a coil in said hood, a supporting stand for said pipeline, means to adjust said pipe line vertically, atank steam produced, a pump in said stand to force -='steam'-through-said tube, a return tube connected to the coil and leading to said tank, and thermofstatic' control means to cause the heating means and the-pump to become inactive when thecoil reaches a' predetermined maximum temperature, "and to cause said heating means and said pump again to become active when the coil reaches a pr e determined minimum temperature.

11. A- hair'drier comprising a hood adapted to surround the head of a person, a pipe line leading to said hood, a flexible element interposed'between said hood and said pipe line, a coil in said hood, a supporting stand for said pipe line, means to adjust said pipe line vertically, a tank containing liquid in said stand, heatingmeans to heat the liquid to produce steam, a hollow feed tube in said pipe line leading from the tank to the coil whereby the coil will be heated by the steam produced, a pump in said stand to force steam through said tube, a return tube connected to the coil and leading to said tank, thermostatic control means to cause the heating means and the pump to become inactive when the coil reaches a predetermined maximum temperature, and to cause said heating means and said pump a ain to become active when the coil reaches a predetermined minimum temperature, and suction means in said stand to create a suction in said pipe line and consequently in said hood.

12. A hair drier comprising a hood adapted to surround the head of a person, a pipe line leading to said hood, a flexible element interposed between said hood and said pipe line, a coil in said hood, a supporting stand for said pipe line, means to adjust said pipe line vertically, a tank containing liquid in said stand, heating means to heat the liquid to produce steam, a hollow feed tube in said pipe line leading from the tank to the coil whereby the coil will be heated by the steam produced, a pump in said stand to force steam through said tube, a return tube connected to the coil and leading to said tank, thermostatic control means to cause the heating means and the pump to become inactive when the coil reaches a predetermined maximum temperature, and to cause said heating means and said pump again to become active when the coil reache a predetermined minimum temperature, a motor driven blower in the stand to create suction in said pipe line and consequently in said hood.

13. A hair drier comprising a hood adapted to surround the head of a person, a pipe line leading to said hood, a flexible element interposed between said hood and said pipe line, a coil in said hood, a supporting stand for said pipe line, means to adjust said pipe line vertically, a tank containing liquid in said stand, heating means to heat the liquid to produce steam, a hollow feed tube in said pipe line leading from the tank to the coil whereby the coil will be heated by the steam produced, a pump in said stand to force steam through said tube, a return tube connected to the coil and leading to said tank, thermostatic control means to cause the heating means and the pump to become inactive when the coil reaches a predetermined maximum temperature, and to cause said heating means and said pump again to become active when the coil reach a predetermined minimum temperature, a motor driven blower in the stand to create suction in said pipe line and consequently in said hood, said stand having an opening therein to provide an exhaust for said blower and a grille over said opening.

14. A hair drier comprising a shell forming a hood adapted to be applied over the head of a person, a liner of heat insulating material within the shell, a coil disposed interiorly of said hood and within said liner, said coil comprising a series of turns sized to conform the coil as a whole to generally dome-like shape, means to circulate a fluid heating medium through said coil to heat the same, said shell, liner and coil being sized to provide a space about the head of a person, within the coil, and means communicating with 12 the hood for circulating air through the said space within the hood.

EINAR HEDIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 312,002 Miller Feb. 10, 1885 851,764 Mason Apr. 30, 1907 1,574,057 Powers Feb. 23, 1926 1,697,859 Forsberg Jan. 8, 1929 1,903,427 Martin Apr. 11, 1933 2,003,610 Santurello June 4, 1935 2,166,509 Smith July 18, 1939 2,264,814 Stanley Dec. 2, 1941 2,366,003 Crago Dec. 26, 1944 2,456,669 Bauer Dec. 21, 1948 

